Furnace.



W. SGHBFFLER.

FURNACE.

APPLICATION FILED 0013.22, 1910.

999,597. Patented Aug. 1, 1911.

v v 29 30 O I 30 s' g 4 P1$ g 51 2 9 '50 P8 ;g 7

I #16 26 27 231 mmmmw I 34' ggg 47 14, P? 4 49 3 4 1 i \10 32 a .1 E 1 NO WITNESSES 4b INVENTOI? COLUMBIA PLANOGRAPH C01, WASHINGTON, D. C.

WILLIAM SCI-IEFFLER, OF GULFPOR'I, MISSISSIPPI.

FURNACE.

Specification of Letters Patent.

Patented Aug. 1, 1911.

Application filed October 22, 1910. Serial No. 588,418.

.To all whom it may concern:

Be it known that I, lVILLIAM SCHEFFLER, a citizen of the United States,and a resident of Gulfport, in the county of Harrison and State ofMississippi, have invented a new and Improved Furnace, of which thefollowing is a full, clear, and exact description.

This invention relates to furnaces for melting brass, and for otherpurposes, and has reference more particularly to a furnace in which isprovided a movable support for a crucible or the like, together withmeans for moving the support into and out of the furnace.

The object of the invention is to provide a simple, strong and durablefurnace in.

which brass and other metals can be melted, and for like and otherpurposes, in which the crucible or other container for the metal or thelike can be easily and quickly moved into and out of the furnace, inwhich the moving of the crucible requires little effort and time, inwhich the crucible is subject to comparatively little wear, by means ofwhich is obviated the use of tongs or like devices for moving thecrucibles, in which the heat in the furnace is conserved, whereby fuelis saved, in the use of which the workman is little exposed to the heatand gases, and which requires the services of but few attendants.

The invention consists in the construction and combination of parts tobe more fully described hereinafter and particularly set forth in theclaims.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views, and in which Figure 1 is avertical section of a furnace constituting an embodiment of myinvention; Fig. 2 is an enlarged fragmentary section on the line 22 ofFig. 3, of part of the mechanism for moving the crucible support; 3 is atransverse section on the line 3-3 of Fig. 2; and Fig. 4 is afragmentary section on the line 41 of Fig. 1.

Before proceeding to a more detailed explanation of my invention, itshould be clearly understood that while the same is particularly usefulin connection with brass furnaces, it can also be advantageouslyembodied in furnaces used for other purposes. The movable support in thefurnace is intended primarily to carry the crucible in which the brassis melted. However, the support can also be employed to hold other likeobjects in the furnace. details shown for example herewith, form no partof the invention, and can be varied in accordance with individualpreference and special conditions, without departing from the underlyingspirit of the invent-ion. Referring more particularly to the drawings, Ihave shown for example, a furnace comprising a base casing 10 having atop 11 provided with an opening 12 about which the furnace casingproper, 13, is positioned. The furnace is fashioned from any suitablerefractory material, and may be of any convenient form and size. A grate14 is located in the opening 12, and the furnace casing 13 isproportioned to hold a suitable crucible 15. At the upper edge, thefurnace casing has a rim 16, upon which a cover 17, movably mounted uponthe rim by means of a hinge 18, seats. The cover has an eye 19 at whichis fastened an operating line or other flexible member 20, by means ofwhich the cover can be raised and lowered. An annular frame 21 isarranged under the top 11, about the opening 12, and has flanges 22secured by means of bolts 23, to the top.

Centrally located with respect to the furnace casing 13 and the grate14, is a tubular support 24, arranged about a tubular guide member 31,and movable through a central opening of the grate. the bottom of thecasing 10 above a baseplate 25, upon which the guide 31 rests. I employa support head 26, consisting of a cylindrical member having near thelower edge a laterally extended flange 27 adapted to seal at the upperrim of the member 24, with the lower portion of the head projecting intothe member 24. The head has on the outer surface, projections orprotuberances 28 which assist in holding in position a layer or coating29 of refractory material such as fireclay. The head and its refractorycoating have therethrough openings 30 so that cool air can penetrateinto the support under the crucible positioned upon the support. Thetubular guide 31, at the upper end, has mounted therein a spider 32having bifurcated arms 33, in which are journaled pulleys 3 1. Thesehave spindles 35 journaled in openings of the arms 33, and extendthrough openings 36 of the member 31, to engage at the Wall of themember 24:. The spider has bifurcated parts 37 projecting Certain of theIt terminates near through suitable openings 88 at opposite sides of themember 31. Guide rollers 39 are journaled in these projecting parts, andengage at the inside of the member 24. A bracket 40 is mounted upon theplate 25, within the member 31, and has journaled thereon a pulley 41,under which passes an operating flexible member $2. This is connectedwith lines 43 which pass over the pulleys 3a, and extend downwardlybetween the members 24 and 31, being secured adjacent to the lower endof the member 24. Near the lower end, the latter has guide rollers whichengage at the outside of the member 31. i

A shaft l?) is journaled within the base casing 10, under an opening 526in the top 11, and has a drum 4? upon which the flexible member 4:2 iswound. The drum, at the opposite ends has rigid therewith, ratchets 48adapted to be engaged by dogs 49 pivotally carried by levers 50, looselymounted upon the shaft, adjacent to the ratchets. Each lever has amanually operable device 51, for controlling its dog. By means of thelevers, the drum can be actuated to wind upon it the line, or to permitthe same to unwind. By winding the line upon. the drum, the cruciblesupport can be raised so that the crucible can be moved out of thefurnace to the top thereof, the cover 17 being opened for the purpose.The support 24: moves guidingly up and down about the member 31.

Having thus described my invention, I claim as new, and desire to secureby Let ters Patent:

1.. In a furnace, a pair of members arranged to telescope one within theother, one of said members being a fixed guide member, the other of saidmembers being a sup porting member and having means for supporting acrucible, guide rollers between said members, a flexible device forraising and lowering said supporting member, and located within saidouter member and between said members, whereby said members serve toprotect said device, and means for operating said flexible device tomove said supporting member.

2. In a furnace, a hollow, fixed guide member, a hollow supportingmember movable upon said guide member and having at the upper end meansfor supporting a crueible, guide rollers between said supporting memberand said guide member, a flexible member secured at the lower end withinsaid supporting member, a guide pulley mounted at the upper end of saidguide member, a second guide pulley positioned near the lower end ofsaid guide member, said flexible member passing over said firstmentionedpulley and under said last-mentioned pulley, and means for operatingsaid flexible member to raise and lower said supporting member.

3. In a furnace, a crucible support comprising a hollow, fixed guidemember, a hollow, movable, supporting member arranged to movelongitudinally of said guide memher, a spider secured at the upper endof said hollow guide member, and having arms provided with guide pulleysengaging said supporting member, and rollers engaging said supportingmember, a flexible member arranged within and secured at the lower endof said supporting member and passing over said pulleys into said guidemember, in combination with means for operating said flexible member tomove said supporting member.

4. In a furnace, a tubular guide, a tubular supporting member movableupon said guide, a crucible supporting head having the lower endpositioned within said supporting member and having a flange seating atthe edge of said supporting member, and means for raising and loweringsaid supporting member, said head being adapted to supporta crucible,said means being arranged with in said guide and within said supportingmember whereby the same serve to protect said means.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

\VILLIAM SCHEFFLER. lVitnesses ELIAS L. GRooMs, \VILMER G. BUCK.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

